CVE-2026-82416 FrankenPHP - Broken Access Control

FrankenPHP < 1.12.5 contains a session state retention vulnerability caused by improper session handling in worker mode with shared session extension, letting attackers cause cross-user session exposure and hijacking, exploit requires specific build configuration.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-362

Vendor fix

Update to version 1.12.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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